Hi students, Welcome to Amans Maths Blogs (AMBIPi). Are you preparing for SSC Scientific Assistant and looking for SSC Scientific Assistant Electronics Questions 261 to 280 with Answer Keys? In this article, you will get previous year questions of SSC Scientific Assistant IMD (Indian Meteorological Department), which helps you in the preparation of government job of SSC IMD Scientific assistant.
SSC Scientific Assistant IMD Previous Year Questions
Scientific Assistant Electronics Question No: 261
What is the frequency range of VHF in electromagnetic spectrum ?
Option A : 30 MHz to 300 MHz
Option B : 3 GHz to 30 GHz
Option C : 30 GHz to 300 GHz
Option D : 3 MHz to 30 MHz
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Option A : 30 MHz to 300 MHz
Scientific Assistant Electronics Question No: 262
Waveguides are employed as a transmission lines for propagation of
Option A : Analog Signals
Option B : Digital Signals
Option C : Line Signals
Option D : Microwave Signals
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Option D : Microwave Signals
Scientific Assistant Electronics Previous Year Question No: 263
What is the frequency range of UHF signals ?
Option A : 3 MHz to 30 MHz
Option B : 25 MHz to 3 GHz
Option C : 300 MHz to 3 GHz
Option D : 300 kHz to 3 MHz
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Option C : 300 MHz to 3 GHz
Scientific Assistant Electronics Question No: 264
What is the function of transmitter in a communication system ?
Option A : Provides the information
Option B : Processes the information
Option C : Modulates the signal
Option D : Rectify the input signal
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Option B : Processes the information
Scientific Assistant Electronics Question Paper No: 265
Noise is measured in ______
Option A : Decibel
Option B : Mel
Option C : Phon
Option D : Zone
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Option A : Decibel
Scientific Assistant Electronics Question No: 266
Correlation receiver and phase locked loop are used in ______
Option A : FSK reception
Option B : PSK reception
Option C : ASK reception
Option D : Both ASK and PSK
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Option A : FSK reception
Scientific Assistant Electronics Question No: 267
Which of the following modulating techniques requires minimum bandwidth ?
Option A : Delta modulation
Option B : PCM
Option C : PAM
Option D : DPCM
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Option A : Delta modulation
Scientific Assistant Electronics Question Paper No: 268
Which of the following is not used for the demodulation of SSB ?
Option A : Product demodulator
Option B : Diode balanced modulator
Option C : Complete phase shift generator
Option D : Bipolar transistor balanced modulator
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Option D : North−Western
Scientific Assistant Electronics Question Paper No: 269
Which of the following block is present in AM but present in FM recievers?
Option A : RF amplifier
Option B : Slope detector
Option C : IF amplifier
Option D : Mixer
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Option B : Slope detector
Previous Year Question Scientific Assistant Electronics: 270
Attenuation per unit length is coaxial cable with frequency ______
Option A : Increases
Option B : Decreases
Option C : Remains constant
Option D : Becomes zero
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Option A : Increases
Scientific Assistant Electronics Question No: 271
Nyquist interval rate for the signal x (t) = cos c (2000t) + cos c (500t) , is ______
Option A : 700 Hz
Option B : 1400 Hz
Option C : 5 kHz
Option D : 4 kHz
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Option D : 4 KhZ
Scientific Assistant Electronics Question No: 272
Which of these are a digital modulation techniques ?
Option A : ASK
Option B : PAM
Option C : FM
Option D : PCM
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Option D : PCM
Scientific Assistant Electronics Question No: 273
Which of the following is NOT correct when referring to AM and FM ?
Option A : FM is more susceptible to noise as compared to AM
Option B : AM can transmit at longer distance as compared to FM
Option C : Phase remains constant in AM
Option D : FM signal has higher bandwidth than AM
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Option B : AM can transmit at longer distance as compared to FM
Scientific Assistant Electronics Question No: 274
Which local oscillator is used in a radio receiver ?
Option A : Crystal oscillator
Option B : Hartley oscillator
Option C : RC-phase shift oscillator
Option D : Wein bridge oscillator
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Option B : Hartley oscillator
Scientific Assistant Electronics Question Paper No: 275
Audio and video signal in the television in the broadcast is done by______.
Option A : Amplitude and Frequency modulation
Option B : Phase and amplitude modulation
Option C : Frequency and angle modulation
Option D : Both by frequency modulation
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Option A : Amplitude and Frequency modulation
Scientific Assistant Electronics Question No: 276
Which among the following is/are the advantages of the digital communication ?
Option A : Simple multiplexing
Option B : Reliable
Option C : Easy processing
Option D : All of these
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Option D : All of these
Scientific Assistant Electronics Question No: 277
Which among the given expression is the Product of the Sum form?
Option A : (b+c)(a+b)
Option B : ac-bd
Option C : ab+cd
Option D : ab(cd)
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Option A : (b+c)(a+b)
Scientific Assistant Electronics Question Paper No: 278
The distributor law of Boolean algebra states:
Option A : AB + AB
Option B : (AB)C = A(BC)
Option C : A+(BC) = (A+B)(A+C)
Option D : AB = BA
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Option C : A+(BC) = (A+B)(A+C)
Scientific Assistant Electronics Question Paper No: 279
The Boolean expressions AB + ABC equals ?
Option A : BC
Option B : ABC
Option C : ABC + BC
Option D : AB
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Option D : AB
Previous Year Question Scientific Assistant Electronics: 280
Calculate the baud rate of the ASK signal and having a bit rate of 300 bps.
Option A : 100
Option B : 250
Option C : 300
Option D : 75
Show/Hide Answer Key
Option C : 300
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| SSC Physics Previous Year Questions | 1 to 20 | 21 to 40 | 41 to 60 | 61 to 80 | 81 to 100 |
| SSC Electronics Previous Year Questions | 1 to 20 | 21 to 40 | 41 to 60 | 61 to 80 | 81 to 100 101 to 120 | 121 to 140 | 141 to 160 | 161 to 180 | 181 to 200 | 201 to 220 | 221 to 240 | 241 to 260 | 261 to 280 | 281 to 295 | |
